Improvement in the manufacture of artificial stone



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A. H. MA'RRET, or WATER WORKS, KENTUCKY.

Letters Patent No. 82,731, dated October 6, 1868. I

IMIPROVEMENT IN THE MANUFACTURE OI ARTIFICIAL STONE.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, A. H. MARKET, of Louisville, in

the county of J efierson, and State of Kentucky, have To enable others skilled in theart to make use of I my invention, I will proceed to describe my process.

I take one part of sharp sand and mix with two parts of hydraulic cement, adding sufiicient water to form a pasty mass. This composition is put into moulds of the proper shape, and allowed to dry in the shade. The blocks, thus formed, are then. removed from the moulds, and are placed in water, where they are allowed to remain for twenty-four hours. They are then removed and saturated with a solution of silicate of soda or potash. The silicate solution may be applied with a brush, or the blocks may be saturated by dipping directly into said solution. Any desirable coloringmatter may be mixed with the composition before being 7 moulded. 1

What I claim as my invention, and desire to secure by Letters Patent, is

The process of 'manufacturing block, substantially, for all building-purposes, as herein described.

A. H. MARKET.

Witnesses:

J om: Kern, EMIL SCHEFFEB. 

